1  /* PR c/65901 */
       2  /* { dg-do compile } */
       3  /* { dg-options "" } */
       4  
       5  struct S;
       6  enum E;
       7  union U;
       8  
       9  void
      10  foo (__builtin_va_list ap)
      11  {
      12    __builtin_va_arg (ap, void);  /* { dg-error "second argument to .va_arg. is of incomplete type .void." } */
      13    __builtin_va_arg (ap, struct S);  /* { dg-error "second argument to .va_arg. is of incomplete type .struct S." } */
      14    __builtin_va_arg (ap, enum E);  /* { dg-error "second argument to .va_arg. is of incomplete type .enum E." } */
      15    __builtin_va_arg (ap, union U);  /* { dg-error "second argument to .va_arg. is of incomplete type .union U." } */
      16  }